Nothing
conf.matrix=function(v,p)
{l=length(v)
a=matrix(0,l,p)
for (i in 1:l)
{for (j in 1:p)
{if (gregexpr(LETTERS[j],v[[i]])[[1]][1]>0) a[i,j]=1
}
}
colnames(a)=LETTERS[1:p]
return(a)
}
# converts the list of defining relations into
# a matrix ready for input to "conf.design"
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